Weighing feeder



-Feb. 21, 192s.

W. F. BOKUM WEIGHING FEEDER Filed Feb. 29, 1924 5 Sheets-Sheet 1 Feb. 21, 1928 lig W. F. SQKUM WEIGHING FEEDER Filed Feb. 29, 1924' 3 Sheets-5heet 2 Feb. 21, 192s 1,660,249

W. F. BOKUM WEIGHING FEEDER Filed Feb. 29, .1924 3 Sheets-Sheet 3 PatentedFeb. 2.1, 1928.

UNITED STATES PATENT oEFicE.

WILLIAM F. BOKUM, F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO PROCTOR & SCIFIVARTZ, INCORPORATED, OF PHILADELPHIA, PENN SYLVAIN IA, A CORPORATION 0F PENNSYLVANIA.

VVE'JIGHINGV FEEDER.

Application led Februai1 29, 1924. Serial No. 696,031.

,My invention relates to certain .improvements in selfweighing feeders Vfor ca rdmg machines, in which the material is fed into a scale pan and weighed and released-fthe pan being returned automatically to position to receive more material to be weighed.

One object of the invention is to construct the mechanism so that the beam of the scale is disconnect-ed from ail me `ianisni during the weighing operation. .n A

Another object of the invention is to construct the clutch mechanism so that the releasing and resetting are easily accomplished. further object of the .inventionl is to provide means for automatically stopping and starting the comb when the feeding apronis stopped or started.

1n the accompanying drawings:

Fig. 1 is a side view of a self-weighing feeder' embodying my invention;

Fig. 2 is al vertical sectional view;

Fig. 3 is an enlarged side view of themain clutch mechanism; f

Fig. f1 is a sectional view on the line 4 4, F ig.-3; f f T Fig. 5 is a sectional view ony the line 5 5, Fig. L1;

Fig. 6 is a detached perspective view of the clutch bell crank lever.;

F igs. 7 and 8A are detachedl views o comb clutch v Fig. 9 is a view illustrating the arrangement of the actuating rod andits lever when the mechanism is yused for stopping and starting the feed mechanism only; and

Fig. 10 is a side view of a portion of F ig. 9, showing the beam in section.

Referring t0 the drawings, 1 is the frame of a self-feeder, arranged, in thepresent instance, to feed cotton, or other material, t0 a carding machine. In the frame is la-hopper 2 for the material. Atv the front ofthe hopper is an endless apron 3, which has pins, or Leetlnthat engagethe cotton andY carry vit from the hopper 2 to `a point above a sca-le pan Ll. A comb 5 removes the material from the apron and feeds it to the scale pan.

Some grades ofwmaterial free themselves l the from the apron without the use of a comb.`

Therefore, lmachines are made with vand without the combing mechanism. Under the scalepan isfan endless belt conveyer 5 5 onto which the material is discharged from the pan. The conveyor carries the material to a carding, or other machine.

The driving mechanism for the machine is shown clearly in Fig. 1. This mechanism will not be described, as it is that used ordinarily in a machine of this type.

rflic scale pan is mounted on one end of a scale beam 6, which is pivoted at 7 to the frame of the machine in the ordinary man ner. Ont-he beam is an adjustable weight 8. The usual means is provided for opening the scale pan to discharge the material. A rod 10 is attached to one arm of a lever Hand i extends past the scale beam 6. Onthe rod is a block 11, which has two stops 12 and 13, between which the beam extends. The beam 6fis entirely free of the mechanism when the weighing operation takes place so that an accurate weight is the result.

Vhen the weighted arm of the beam 6 is raised, it comes in Contact with the upper stop 12, raising the rod 10. lVhen the beam is lowered, it comes in contact with the stop 13. 'f

rllhe lever 14. is pivoted at 15 and has a weighted arm 16 and an arm 17', Vwhich is provided with a pin 18. The pin 18 engages a notch in a dog 19, which is pivoted'at 20. The tooth of this dog-when the dog is released-engages one of the teeth of a ratchet wheel 21, which is loosely mounted on a shaft On the shaft 22 is a drinn 30, around which passes the toothed feeding apron 3, Fig. 2.

Loose on the shaft 22 is a driven sprocket wheel 23. Thiswheel has four driving pins 2-l,'in the present instance. On a hub 25, secured to the shaft 22, is a bell crank lever 26, pivot-ed at 28, and having, on one arm, a pin 27, which can'be moved into and out of the path of the driving pins 2li. The other arm of the lever 26 extends through an opening inthe ratchet wheel 21, Fig. 5. A spring 29, attached t0 the ratchet wheel, presses against an arm L of the hub 25, and tends to hold the pin 27 in the path of the driving pms.

`Then the ratchet wheel 21 is stoppedy by the dog 19, the bell crank lever 26 is turned on its pivot, moving the pin 27 out of the path vof the driving pins and stopping the hopper is discharged, which causes the beamV to turn on its pivot, the long arm Vof the beam striking the stop-13 on the rod 10. In the meantime, the dog 19 is retracted by mechanism, which will be hereinafter described, and is in position to be engaged bythe pin 18, as in Figp3.l f

The movement, above described, frees the sprocketwheel and the pinV 27 is moved by the spring 29 into the path of the pins 24` on the Ydrivenvsprocket wheel 23, and `the feeding. mechanism is set in motion. `A

Y spring 50 is secured to the hub 25 and is so shaped as to hold the pin 27 out of engage*- ment with the driving pins when the pin 27 has been disengaged. 'f TheV spring yields when the pin is forced into the notch of the lhub. Secured tothe hub isa ratchet "dog 38 is released by themovementfof theV wheel 51.l This wheel is engaged by a Lpawl 52, which is pivoted at 53 to the frame of y the machine.

The pawl is moved intoengagementrwith the ratchetwheel 51 when the dog 19 is vreleased `iii-.order to prevent the backward movement of the apron due to theload thereon. A connection is made between the apron clutch mechanism and the mechanism for actuating the comb' in order to stop the movement of they comb 5 when the feeding apron 3 is stopped.V i V to an arm of a resetting lever 33, which is pivoted Yat 34. Connected to thev other arm of theleverlisaxrod 35, which engages an arm'36, which is pivoted at 37. This arm has lugs between which'one arm of a dog 38 j extends. Y The dog is -pivoted at 39. The arm of thev dog is notched Vat theeiid toV receivea' retaining lpin 40, which iscarried byone arm of abell.v crank lever 41, which isv pivoted at 42. l.'Ihe. other Varm of the lever 41 is attachedto the lower end of the rod 10.

VLoose ontheV shaft 47 Vis a driven sprocket wheel 43., This wheel has internal ratchet teethA 44, engaged by la pawl 45 onva carrier 46, which is secured to the shaft 47 The shaft47 operates the comb 5, which strips material from the endless apron 3. When thetravel ofthe apron 3 is stopped, the

movementof the comb is stoppedA through the mechanism above described. WhenV the rOd 10,l it engages a pin 48, which isconnected to the pawlr 45, and moves it in the slot of the carrierl 46 against a spring 49,

causing the Vpawl'tomove out of engagementwith the'ratchet teeth of the sprocket wheel43. v n f When the` load is discharged from V'the weighing hopper, the dog 38 is withdrawn and is held out of the path of the pin 478,

allowing the sprocket wheel 43 to turn` the shaft 47 through therpawl 45.

vIn some types of machines,it is only necessary to stop the movement ofthe feednig apron. In such a case, the meansfor actuating Vthe comb,for other device, are not.

mechanism controlling the Y into the path of the driving pins at the prop- By the construction hereinbeforeV Vde-V er'moment, and the. scale-being lfree of .otherA mechanisms, while weighing-insures an accuratebalance.V

.I claim: Y Y 1. The combination in weighing feeder,

ofa'lhopper; an endless apron for removing material from Vthe hopper; a comb for re moving material from the apron; a scale beam;'a weighing hopper on the beam Aar- On the dog 19 is an arm 31 to which a. rod-32 is connected. This rod is attachedV ranged to receive material combed from the apron, means for driving the apron; and

mechanism for disconnecting the driving.

2. The combination in a. weighing feeder,

of a pivoted scale beam; a weighing hopper mounted on one arm of the beam; means for feeding material to the hopper; a Vdriven.

wheelrfor impart-ing motion to the feeding mechanism, said wheel having a driving pin thereon; a hub; a lever' pivoted on the hub and having a pin arrangedV to be moved into andV out of the path ofthe driving pin;` a ratchet Wheel engaging an arm of the lever;

a dog arrangedto engage the vratchet wheel. and khold Vit so as to',V move the pin of the izo lever out Voftherpath ofthe driving pin;

a leverv arranged to engage the dog and hold it out of action :and a rod connected to said lever and arranged to beV shifted by the movement of the scale beam. p

V3. The combination in a weighing feeder, ofa pivoted scale beam; a weighing hopper on the beam; means for feeding material to the Weighing hopper; driving'means for the feeding means, said driving means consisting et a Wheel having a driving pin; a shaft on which the feeding means is mounted; a hub secured to the shaft; a lever piveted to the hub, one arm ot the lever having a pin arranged to be moved into the path ot the driving pin; a ratchet wheel having a pin to receive the other arm of the lever; and a dog arranged to engage the ratchet Wheel.

d. The'combination in a Weighing feeder, Oli' a beam; a Weighing hopper; means for feeding material to the hopper; driving mechanism for the said ieeding means, said dri ing means consisting ot a wheel having a driving pin; a shaft on which the Wheel is mounted; a hub secured to the shaft; a tvfoarmed lever pivoted to the hub, one arm of said lever having a pin arranged to be moved into the path of the pin on the driving Wheel; a ratchet Wheel engaging `the other arm of the lever; a spring on the ratchet Wheel bearing against a projection on the hub; a dog engaging the ratchet Wheel; a lever having a pin engaging the dog to hold it out of action; and a rod On the lever extending into position to be actuated b v the beam vvhen the load is being weighed.

5. The combination in a Weighing feeder,

of a trame; a scale beam mounted thereon; a Weighing hopper carried by the beam; a hopper for material; an apron lor removing the material 'from the hopper; means for driving the apron, said means consisting of a wheel having a driving` pin; aI comb for removing material from the apron; means for driving the comb independently, said means consisting ot a Wheel; mechanism betiveen the apron 'and its driving Wheel, said mechanism being controlled by the beam; and mechanism betvveen the driving Wheel and the comb, also controlled by the beam. 6. The combination in a. Weighing feeder, of a beam; a scale pan on the beam; means iior feeding material to the pan; a driving vrhccl. having driving pins; a shaft; a hub secured thereto; a bell. crank lever on the hub, said bell crank lever having a pin on one arm arranged to be engaged by one of the driving pins; a ratchet Wheel loose on the hub, said ratchet Wheel having an opening for the other arm of the bell. crank lever; a second ratchet Wheel secured to the hub; a pawl arranged to engage saidlast mentioned ratchet Wheel; a dog arranged to engage the iirst mentioned ratchet Wheel and the paivl; and means for holding the dog clear of its ratchet Wheel, said means being controlled by the scale beam.

WILLIAM F. BOKUM. 

